pandaboard ducati-m3

1） Updating Ducati

        For hardware accelerated video playback and camera usage you have to use proper Ducati binary.

       http://en.wikipedia.org/wiki/Distributed_Codec_Engine

 

      http://downloads.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/ce/

 

       http://gstreamer.freedesktop.org/data/events/gstreamer-conference/2010/slides/Rob%20Clark%20-%20GStreamer%20and%20OMAP4.pdf

 

       http://omappedia.org/wiki/Ducati_For_Dummies

 

     ducati-m3.bin 和 Pandaboard ES（OMAP4XXX）Android 硬解码相关的！我的Android4.1.2不能硬解码可能是和这个有关系！在此做个笔记！一直看源码，感觉又找错方向了！不过也收货很大！hardware accelerator subsystem (Ducati)~！(Ducati是TI针对视频/影像的硬件加速子系统!）

     The IPC between Cortex A9 and Ducati is handled by SysLink. The only interface that Ducati exposes to Cortex A9 is OMX.（Cortex A9和 Ducati 进程间通信通过SysLink，Cortex A9 公开的Ducati 唯一接口是OMX！）

注意：(Ducati/M3)是TI OMAP4XXX 系统芯片的协处理器（co-processor），提供音频视频硬件加速解码！也就是TI OMAP4XXX 视频、影像编解码器和算法硬件加速子系统！

  

2）IVA-HD Overview

The Image Video Accelerator - High Definition (IVA-HD) Sub System is composed of hardware accelerators which enable videoencoding and decoding up to 1080 p/i resolution at 30 frames per second (or 60 fields per second).

HOST-SLAVE架构
从下图可以看出，左边HOST是Dual Core Coretex-A9处理器，主要运行HLOS（High Level OS，比如Linux，Android系统）右边虚线框是SLAVE，就是传说中的Ducati子系统
主要是多媒体处理软件系统：由2个ARM Cortex-M3处理器和2个Tesla DSP构成;

3）ISS Overview

The Imaging Sub System (ISS) deals with the processing of pixel data coming from an external image sensor or from memory. ISS as a component forms part of still image capture, camera viewfinder and video record use-cases. Figure below shows the Imaging subsystem constituents.